According the the information i found it is quite rare: Built 1943-1952, 10.200 examples. It´s 8 3/4 lines (=19.4mm) diameter while heigth is 3.35mm. Available with 15, 16 and 17 jewels beating with 18.000 A/h. Breguet mainspring. It´s the successor the calibre 94 (1926 to 1943, same size, 9.600 made).

Dating by year should be possible if you can submit the movement number.